A method and system for dividing mechanical layers of surface outcrop and core rock

A technology of rock mechanics and core, applied in the field of surface outcrop and core rock mechanical layer division method and system, can solve the problems of poor operability, poor operability, and difference in fracture restriction ability, and achieve wide application, strong applicability, Easy operability effect

Active Publication Date: 2021-02-19
CHINA UNIV OF PETROLEUM (BEIJING)
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Problems solved by technology

However, the naked eye identification has certain errors and limitations, and it is easy to ignore the inconspicuous but important interfaces. In the observation of surface outcrops, some cracks terminate at the interface and some cracks cut through the interface. There are differences in the confinement capabilities of fractures of different scales
[0004] For the division of core rock mechanical layers, technicians proposed in 2009 to divide and determine the rock mechanical layers by measuring the rock mechanical parameters of the rock, but this method requires a large number of rock samples to be picked up, and the operability is poor
[0005] To sum up, the current rock mechanical layer division method for surface outcrops and cores has limitations, large errors, and poor operability

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  • A method and system for dividing mechanical layers of surface outcrop and core rock

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[0031] The principle and spirit of the present invention will be described below with reference to several exemplary embodiments. It should be understood that these embodiments are given only to enable those skilled in the art to better understand and implement the present invention, rather than to limit the scope of the present invention in any way. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0032] Those skilled in the art know that the embodiments of the present invention can be implemented as a system, device, device, method or computer program product. Therefore, the present disclosure may be embodied in the form of complete hardware, complete software (including firmware, resident software, microcode, etc.), or a combination of hardware and software.

[0033] According to the embodiment of the present invention, a method and system for divid...

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Abstract

The present invention proposes a method and system for dividing mechanical layers of surface outcrops and rock cores, wherein the method includes: obtaining the rebound value of the rock layer, and obtaining the relative rock mechanical properties of the rock according to the rebound value; According to the natural fractures of the core, the probability of natural fracture termination is obtained; according to the preset critical value, the corresponding rock interface is determined to be the rock mechanical layer interface; mechanical layer. The method and system can divide the rock mechanical layer of the surface outcrop and the core on the spot when the surface outcrop and the core are observed. In-depth research on the formation and distribution of fractures, faults, and folds in local structures provides effective information support and can be widely used in strata of various lithologies.

Description

technical field [0001] The invention relates to the technical field of reservoir geology research, in particular to a method and system for dividing mechanical layers of surface outcrops and core rocks. Background technique [0002] The rock mechanical layer refers to the rock formation with similar rock mechanical behavior or consistent rock mechanical properties. The rock mechanical layer is composed of the rock mechanical layer interface and the rock mechanical unit, and the rock mechanical interface defines the rock mechanical unit. [0003] The distribution of rock mechanical layers affects the formation and distribution of local structures of natural fractures, faults and folds. At present, the research on the division of rock mechanical layers is in the exploratory stage. In the surface outcrop, technicians proposed in 2003 that according to the change of lithology, the sedimentary stratigraphic interface can be clearly observed by naked eyes. If there is a phenomenon...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N3/52G01N33/24
CPCG01N3/52G01N33/24
Inventor 吕文雅吕鹏
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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